In knitting machines, one of the thin plates, blades, or other devices, that depress the loops upon or between the needles.

Dividing sinker, in knitting machines, a sinker between two jack sinkers and acting alternately with them. -- Jack sinker. See under Jack, n. -- Sinker bar]. (a) In knitting machines, a bar to which one set of the sinkers is attached. (b) In deep well boring, a heavy bar forming a connection between the lifting rope and the boring tools, above the jars.